pcre2_substring_get_byname(3) — Linux manual page

NAME \| SYNOPSIS \| DESCRIPTION \| COLOPHON

PCRE2_SUB...ET_BYNAME(3) Library Functions ManualPCRE2_SUB...ET_BYNAME(3)

NAME top

       PCRE2 - Perl-compatible regular expressions (revised API)

SYNOPSIS top


       #include <pcre2.h>

       int pcre2_substring_get_byname(pcre2_match_data *match_data,
         PCRE2_SPTR name, PCRE2_UCHAR **bufferptr, PCRE2_SIZE *bufflen);

DESCRIPTION top


       This is a convenience function for extracting a captured substring
       by name into newly acquired memory. The arguments are:

         match_data    The match data for the match
         name          Name of the required substring
         bufferptr     Where to put the string pointer
         bufflen       Where to put the string length

       The memory in which the substring is placed is obtained by calling
       the same memory allocation function that was used for the match
       data block. The convenience function pcre2_substring_free() can be
       used to free it when it is no longer needed. The yield of the
       function is zero for success or one of the following error
       numbers:

         PCRE2_ERROR_NOSUBSTRING   there are no groups of that name
         PCRE2_ERROR_UNAVAILBLE    the ovector was too small for that
       group
         PCRE2_ERROR_UNSET         the group did not participate in the
       match
         PCRE2_ERROR_NOMEMORY      memory could not be obtained

       If there is more than one group with the given name, the first one
       that is set is returned. In this situation PCRE2_ERROR_UNSET means
       that no group with the given name was set.

       There is a complete description of the PCRE2 native API in the
       pcre2api page and a description of the POSIX API in the pcre2posix
       page.

COLOPHON top

       This page is part of the PCRE (Perl Compatible Regular
       Expressions) project.  Information about the project can be found
       at ⟨http://www.pcre.org/⟩.  If you have a bug report for this
       manual page, see
       ⟨http://bugs.exim.org/enter_bug.cgi?product=PCRE⟩.  This page was
       obtained from the tarball fetched from
       ⟨https://github.com/PhilipHazel/pcre2.git⟩ on 2025-08-11.  If you
       discover any rendering problems in this HTML version of the page,
       or you believe there is a better or more up-to-date source for the
       page, or you have corrections or improvements to the information
       in this COLOPHON (which is not part of the original manual page),
       send a mail to [email protected]

PCRE2 10.46-DEV              19 December 2014    PCRE2_SUB...ET_BYNAME(3)